Rigify error Generation has thrown an aception 'None Type' object has no attribute 'bones'
Your fix for &quot;Spine.004 is disjoint&quot; was not exactly a fix. It just removed the error message and created further problems. It's not your fault, Rigify setups are just easily messed up with by making small changes.

parent the neck back to Spine.004
snap the neck bone to the end of the spine


If you have trouble snapping the bones together, here is how to do it:
https://youtu.be/ILDdIbAwxJM?t=490